NO133804B - - Google Patents
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- Publication number
- NO133804B NO133804B NO167231A NO16723167A NO133804B NO 133804 B NO133804 B NO 133804B NO 167231 A NO167231 A NO 167231A NO 16723167 A NO16723167 A NO 16723167A NO 133804 B NO133804 B NO 133804B
- Authority
- NO
- Norway
- Prior art keywords
- furnace
- nickel
- stated
- barrier
- pipe
- Prior art date
Links
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 27
- 239000000428 dust Substances 0.000 claims description 19
- 229910052759 nickel Inorganic materials 0.000 claims description 14
- 230000004888 barrier function Effects 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 11
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 3
- 229910002091 carbon monoxide Inorganic materials 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 229940124587 cephalosporin Drugs 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 15
- 238000000605 extraction Methods 0.000 description 5
- 238000005192 partition Methods 0.000 description 5
- 238000001816 cooling Methods 0.000 description 3
- 230000035611 feeding Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 206010011906 Death Diseases 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910000480 nickel oxide Inorganic materials 0.000 description 2
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D501/00—Heterocyclic compounds containing 5-thia-1-azabicyclo [4.2.0] octane ring systems, i.e. compounds containing a ring system of the formula:, e.g. cephalosporins; Such ring systems being further condensed, e.g. 2,3-condensed with an oxygen-, nitrogen- or sulfur-containing hetero ring
- C07D501/14—Compounds having a nitrogen atom directly attached in position 7
- C07D501/16—Compounds having a nitrogen atom directly attached in position 7 with a double bond between positions 2 and 3
- C07D501/20—7-Acylaminocephalosporanic or substituted 7-acylaminocephalosporanic acids in which the acyl radicals are derived from carboxylic acids
- C07D501/22—7-Acylaminocephalosporanic or substituted 7-acylaminocephalosporanic acids in which the acyl radicals are derived from carboxylic acids with radicals containing only hydrogen and carbon atoms, attached in position 3
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/54—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with at least one nitrogen and one sulfur as the ring hetero atoms, e.g. sulthiame
- A61K31/542—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with at least one nitrogen and one sulfur as the ring hetero atoms, e.g. sulthiame ortho- or peri-condensed with heterocyclic ring systems
- A61K31/545—Compounds containing 5-thia-1-azabicyclo [4.2.0] octane ring systems, i.e. compounds containing a ring system of the formula:, e.g. cephalosporins, cefaclor, or cephalexine
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/55—Design of synthesis routes, e.g. reducing the use of auxiliary or protecting groups
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Organic Chemistry (AREA)
- Medicinal Chemistry (AREA)
- Pharmacology & Pharmacy (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Cephalosporin Compounds (AREA)
Abstract
Analogifremgangsmåte for fremstilling av terapeutisk aktive 7-a-aminobenzyl-3-metyl-cefalosporin-derivater.Analogous process for the preparation of therapeutically active 7-α-aminobenzyl-3-methyl-cephalosporin derivatives.
Description
Roterende ovn egnet for fremstilling av nikkelkarbonyl. Rotary furnace suitable for the production of nickel carbonyl.
Når en roterende ovn brukes for fremstilling av nikkelkarbonyl fra materiale When a rotary kiln is used for the production of nickel carbonyl from material
som inneholder metallisk nikkel ved reaksjon med carbonmonoxyd som strømmer i kontakt med nikkel, er reaksjonen så lang-som at det nikkelholdige materiale må for-bli i ovnen i lange perioder, f. eks. opp til 120 timer for å fullstendiggjøre reaksjonen, selv om det er en god kontakt mellom gassen og de faste stoffer. Etter som ekstrak-sjonen av nikkel fra materialet skrider frem, dannes et meget fint støv, og dette føres bort av gasstrømmen. Mengden av dette støv beror i noen utstrekning på arten av materiale som alltid enten er, eller inneholder redusert nikkeloxyd, da endel reduserte oxyder brytes ned til en blan-ding av meget fint pulver og noe grovere materiale, når omtrent to tredjedeler av nikkelet er blitt utvunnet, med det resultat at dannelsen av støv økes ganske sterkt ved dette trinn. Mengden av støv som føres bort, økes med gasshastigheten og også med styrken av den mekaniske omrøring som i noen utstrekning beror på ovnens rota-sjonshastighet. For å sikre en god kontakt mellom gassen og faste stoffer, er det imidlertid av vesentlig betydning å rotere ovnen ganske hurtig og å anordne løfte-organer som kontinuerlig vil løfte materialet, og deretter la det falle ned gjennom gassen. Som følge av at reaksjonen er sterkt eksoterm, må det dessuten anordnes kjøleslanger, og disse hindrer gasstrømmen og fører til høyere lokale gasshastigheter og følgelig til større støvtap. which contains metallic nickel by reaction with carbon monoxide flowing in contact with nickel, the reaction is so long that the nickel-containing material must remain in the furnace for long periods, e.g. up to 120 hours to complete the reaction, even if there is good contact between the gas and the solids. As the extraction of nickel from the material progresses, a very fine dust is formed, and this is carried away by the gas stream. The amount of this dust depends to some extent on the nature of the material, which always either is or contains reduced nickel oxide, as some of the reduced oxides break down into a mixture of very fine powder and somewhat coarser material, when approximately two-thirds of the nickel has been extracted, with the result that the formation of dust is increased quite strongly at this step. The amount of dust that is carried away is increased with the gas velocity and also with the strength of the mechanical stirring, which to some extent depends on the oven's rotation speed. In order to ensure a good contact between the gas and solids, however, it is of essential importance to rotate the furnace fairly quickly and to arrange lifting means which will continuously lift the material, and then let it fall down through the gas. As a result of the reaction being strongly exothermic, cooling hoses must also be arranged, and these prevent the gas flow and lead to higher local gas velocities and consequently to greater dust loss.
Støvet som føres ut av ovnen av gas- The dust that is carried out of the furnace by gas-
sen, kan naturligvis oppfanges og skilles fra gassen, f. eks. i cyklonseparatorér dg filtere, men dette støv inneholder noe uekstrahert nikkel, og det er derfor øn-skelig å føre det tilbake til ovnen for å full-stendiggjøre utvinningen. På den annen side kan dets volum være slik at som følge av tilbakeføringen til ovnens tilmatningsende, vil friskt tilmåtet materiale føres altfor hurtig mot ovnens utløpsende og føl-gelig vil utvinningen av dette materiale være ufullstendig på det tidspunkt da det tømmes ut. late, can of course be captured and separated from the gas, e.g. in cyclone separators and filters, but this dust contains some unextracted nickel, and it is therefore desirable to return it to the furnace to complete the extraction. On the other hand, its volume may be such that, as a result of the return to the supply end of the furnace, fresh material will be carried too quickly towards the outlet end of the furnace and consequently the recovery of this material will be incomplete at the time it is emptied.
Oppfinnelsen har som formål å unngå denne ulempe idet man sikrer at så lite nikkel som mulig forblir uutvunnet. The purpose of the invention is to avoid this disadvantage by ensuring that as little nickel as possible remains unmined.
I henhold til oppfinnelsen er ovnen ved hjelp av en ringformet barriere eller skillevegg oppdelt i to avdelinger og et sentralt rør strekker seg fra tilmatningsenden av ovnen gjennom barrieren og inn i ut-tømningsende-avdelingen. According to the invention, the furnace is divided into two compartments by means of an annular barrier or partition and a central pipe extends from the supply end of the furnace through the barrier and into the discharge end compartment.
Barrieren kan være anordnet omtrent halvveis i ovnens lengderetning, men for-trinsvis anordnes den nærmere tilmatningsenden enn utløpsenden. Som følge av at gasshastigheten økes ved åpningen i barrieren, skal det sentrale rør strekke seg i en liten avstand forbi barrieren. The barrier can be arranged approximately halfway in the longitudinal direction of the oven, but it is preferably arranged closer to the supply end than the outlet end. As a result of the gas velocity being increased at the opening in the barrier, the central pipe must extend a short distance past the barrier.
Et ovnsanlegg i overensstemmelse med oppfinnelsen er vist som et utførelsesek-sempel på vedlagte skjematiske tegning. A furnace system in accordance with the invention is shown as an exemplary embodiment on the attached schematic drawing.
Det viste anlegg omfatter en roterende ovn med en kappe 1, hvis akse skråner i en liten vinkel til horisontalplanet. Ved tilmatningsenden er det en ringformet skillevegg 2 og det reduserte nikkeloxyd som skal behandles, innføres gjennom et rør 3 og en skruetransportør 4, som strekker seg forbi skilleveggen 2. Ved utløpsenden er det en skillevegg 5, over hvilken mate- The plant shown comprises a rotary kiln with a casing 1, the axis of which is inclined at a small angle to the horizontal plane. At the feed end there is an annular partition wall 2 and the reduced nickel oxide to be treated is introduced through a pipe 3 and a screw conveyor 4, which extends past the partition wall 2. At the discharge end there is a partition wall 5, over which feed-
rialet strømmer inn i et faststående ut- rial flows into a fixed output
løpshode 6, og derpå ned i en kanal eller renne 7. Carbonmonoxyd tilføres gjennom et faststående rør 8, som er forbundet ved hjelp av en pakning 9, med et rør 10, som er fast forbundet med ovnen og som har et antall grenledninger 11, som passerer gjen- running head 6, and then down into a channel or chute 7. Carbon monoxide is supplied through a fixed pipe 8, which is connected by means of a gasket 9, to a pipe 10, which is permanently connected to the furnace and which has a number of branch lines 11, which passes re-
nom kappen 1 for å innføre carbonmon- nom kappe 1 to introduce carbonmon-
oxydet i ovnen ved forskjellige punkter langs etter dennes lengde. the oxide in the furnace at different points along its length.
Gassene forlater ovnen gjennom et faststående hode 12 ved tilmatningsenden og strømmer til et støv-oppsamlingssystem 13, hvorfra det oppsamlete støv strømmer nedover gjennom et rør 14 til en skrue-transportør 15. The gases leave the furnace through a fixed head 12 at the feed end and flow to a dust collection system 13, from which the collected dust flows downwards through a pipe 14 to a screw conveyor 15.
Ovnen er oppdelt i to kammere ved The oven is divided into two chambers
hjelp av en barriere eller skillevegg 16. Transportøren 15 passerer gjennom et hull with the help of a barrier or partition 16. The conveyor 15 passes through a hole
17 i en plate 18, som lukker et sentralt rør 17 in a plate 18, which closes a central tube
19. Transportøren 15 begrenser åpningen i platen 18 og hindrer følgelig en for stor gasstrøm gjennom røret. En liten strøm av gass gjennom det sentrale rør er ønske- 19. The conveyor 15 limits the opening in the plate 18 and consequently prevents an excessive flow of gas through the pipe. A small flow of gas through the central tube is desirable
lig, skjønt ikke av avgjørende betydning og den nødvendige strøm oppnåes ved å lig, although not of decisive importance and the required current is obtained by
gjøre hullet 17 tilstrekkelig stort til å slippe inn enden av skruetransportøren, og også make the hole 17 sufficiently large to admit the end of the screw conveyor, and also
til å la det være igjen en åpning for en liten strøm av gass gjennom røret. Denne anordning eliminerer de vanskeligheter som ville oppstå hvis transportøren ble ført gjennom en pakning inn i røret 19. to leave an opening for a small flow of gas through the tube. This arrangement eliminates the difficulties that would arise if the carrier were passed through a gasket into the tube 19.
Røret 19 er understøttet av armkors The pipe 19 is supported by cross arms
20 og det passerer gjennom barrieren 16. 20 and it passes through barrier 16.
Det inneholder skrueformete vinger 21, for It contains screw-shaped wings 21, for
å føre støvet hurtig gjennom, og det tøm- to pass the dust quickly through, and it empty-
mer ut det tilbakeholdte støv godt og vel bortenfor barrieren 16. more out the retained dust well and truly beyond the barrier 16.
Begge avdelinger inneholder løfteorga- Both departments contain lifting organi-
ner og kjøleslanger som ikke er vist på tegningen. I tilmatningsende-avdelingen kan antallet av løfteorganer fordelaktig være større enn i utløpsende-avdelingen. ner and cooling hoses that are not shown in the drawing. In the supply end section, the number of lifting devices can advantageously be greater than in the outlet end section.
Ved hjelp av oppfinnelsen kan hoved- With the help of the invention, the main
delen av reaksjonen utføres i tilmatningsende-avdelingen under gode kontaktfor- part of the reaction is carried out in the feed-end department under good contact conditions
hold mellom fast stoff og gass, og med pas- hold between solid and gas, and with pas-
sende kjøling, og med en passende gass- send cooling, and with a suitable gas
tilførsel. Ved den hastighet hvormed tilmatningsende-avdelingen roterer, vil en stor mengde støv føres ut av avdelingen, supply. At the speed at which the feed-end compartment rotates, a large amount of dust will be carried out of the compartment,
men dette er ikke noen ulempe da alt stø- but this is not a disadvantage as everything
vet gjenvinnes og føres inn i utløpsende-avdelingen. Denne avdeling roterer natur- know is recovered and fed into the end-of-life department. This department rotates natural
ligvis med samme hastighet som tilmat- probably at the same speed as the feed
ningsende-avdelingen, og hvis den var ut- ningende department, and if it was out-
styrt med likeså mange løfteorganer som sistnevnte, ville det kunne utvinnes en stor mengde støv. Dette støv ville naturligvis bli gjenvunnet og påny tilmåtet til utløps-ende-avdelingen, men ville da øke tilbake-blandingen i denne avdeling. Endel mate- controlled with as many lifting devices as the latter, a large amount of dust could be extracted. This dust would of course be recovered and re-admitted to the outlet-end section, but would then increase the back-mixing in this section. Endel feed-
riale vil da bli tømt ut for hurtig fra avde- rial will then be emptied too quickly from the department
lingens utløpsende. Det følger herav at for oppnåelse av en maksimal nikkelutvinning skal støvutviklingen i utløpsende-avdelin- the outlet end of the ling. It follows from this that, in order to achieve a maximum nickel extraction, the dust generation in the outlet end section must
gen holdes ved et minimum ved å anordne et minimums antall av løfteorganer i den- is kept to a minimum by arranging a minimum number of lifting means in the
ne avdeling. ne department.
Utløpsende-avdelingen har i virkelig- The end-of-life department has in reality
heten to tilmatninger, idet det ene er til- called two feedings, as one is feeding
matning av støv fra tilmatningsende-avdelingen, og den annen av grovere ma- feeding of dust from the feed-end department, and the other of coarser ma-
teriale som strømmer over den sentrale bar- terial flowing over the central bar-
riere. De relative mengder av støv og grove partikler som trer inn i utløpsende-avde- rire. The relative amounts of dust and coarse particles that enter the outlet end-de-
lingen er avhengig av sprøheten av den opprinnelige tilmatning under nikkeleks-traksjonen. Hva enn arten av det tilmatete materiale er, vil således nikkelutvinningen forbedres i den samme utstrekning som om de to avdelinger var to ovner anordnet i serie. Dessuten arbeider den store utløps-ende-avdeling under ideelle forhold for de senere trinn av karbonylreaksjonen, fordi en særlig sterk støvutvikling og resirku- ling is dependent on the brittleness of the original feed during the nickel extraction. Whatever the nature of the material fed, the nickel extraction will thus be improved to the same extent as if the two departments were two furnaces arranged in series. In addition, the large outlet-end department works under ideal conditions for the later stages of the carbonyl reaction, because a particularly strong dust generation and recircu-
lering unngåes, og følgelig beveges materi- formation is avoided, and consequently material is moved
alet rolig i denne avdeling mot utløps- alet calm in this department towards expiring
enden med en jevn hastighet. Følgelig vil mesteparten av partiklene i denne avdeling holdes tilbake i den samme tid og nikkelet utvinnes fullstendig fra dem. the end at a steady speed. Consequently, most of the particles in this compartment will be retained in the same time and the nickel will be completely extracted from them.
Claims (6)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US57922266A | 1966-09-14 | 1966-09-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| NO133804B true NO133804B (en) | 1976-03-22 |
| NO133804C NO133804C (en) | 1976-06-30 |
Family
ID=24316060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO167231A NO133804C (en) | 1966-09-14 | 1967-03-10 |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US3507861A (en) |
| JP (1) | JPS4921155B1 (en) |
| BE (1) | BE696026A (en) |
| CH (1) | CH501011A (en) |
| DE (1) | DE1670625C3 (en) |
| DK (1) | DK123104B (en) |
| ES (1) | ES338498A1 (en) |
| FR (1) | FR6294M (en) |
| NL (1) | NL141515B (en) |
| NO (1) | NO133804C (en) |
| SE (1) | SE359841B (en) |
Families Citing this family (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USRE29164E (en) * | 1967-09-05 | 1977-03-29 | Bristol-Myers Company | 7-Amino-cephalosporanic and decephalosporanic acid derivatives |
| US3852282A (en) * | 1969-04-01 | 1974-12-03 | Squibb & Sons Inc | Certain 2-substituted cephalosporins |
| GB1332306A (en) * | 1969-12-23 | 1973-10-03 | Glaxo Lab Ltd | Antibiotics |
| US4000129A (en) * | 1970-02-18 | 1976-12-28 | Koninklijke Nederlandsche Gist-En Spiritusfabriek N.V. | 6-aminopenicillanic acid sulfoxide silyl esters |
| US3668202A (en) * | 1970-02-24 | 1972-06-06 | Lilly Co Eli | Process for preparing cepham compounds |
| US3668201A (en) * | 1970-02-24 | 1972-06-06 | Lilly Co Eli | Cepham compounds |
| US3676434A (en) * | 1970-07-29 | 1972-07-11 | Lilly Co Eli | Cephalosporin salts |
| US3714146A (en) * | 1970-10-05 | 1973-01-30 | Bristol Myers Co | Novel syntheses of cephalexin and intermediates therefor |
| CA972362A (en) * | 1970-10-12 | 1975-08-05 | Hirotomo Masuya | Penicillins and cephalosporins |
| US4175125A (en) * | 1971-12-27 | 1979-11-20 | Eli Lilly And Company | Method for treating methicillin resistant staphylococcus aureus |
| JPS551272B2 (en) * | 1972-04-14 | 1980-01-12 | ||
| US3923795A (en) * | 1972-06-19 | 1975-12-02 | Lilly Co Eli | 2-Alkoxycephalosporins |
| US4056676A (en) * | 1973-03-14 | 1977-11-01 | Eli Lilly And Company | Halogenated phenylthioacetamido cephalosporins |
| AR205537A1 (en) * | 1973-05-10 | 1976-05-14 | Fujisawa Pharmaceutical Co | PROCEDURE FOR THE PREPARATION OF ACID DERIVATIVES 7-SUBSTITUTED PHENYLGLYCINAMIDE - 3 - SUBSTITUTED - 3 - CEFEM - 4 - CARBOXYL |
| DE2355078A1 (en) * | 1973-11-03 | 1975-05-07 | Bayer Ag | PROCESS FOR THE PREPARATION OF 7-AMINO-DELTA HIGH 3-CEPHEM DERIVATIVES |
| US4063019A (en) | 1976-03-30 | 1977-12-13 | E. R. Squibb & Sons, Inc. | [[[(2,4-Dioxo-1-imidazolidinyl)amino]carbonyl]amino]-acetylcephalosporin derivatives |
| US4946838A (en) * | 1981-07-13 | 1990-08-07 | E. R. Squibb & Sons, Inc. | Crystalline anhydrous aztreonam |
| US4520022A (en) * | 1983-01-28 | 1985-05-28 | Bristol-Myers Company | Substituted vinyl cephalosporins |
| ZM884A1 (en) * | 1983-01-28 | 1984-10-22 | Bristol Myers Co | Substituted vinyl cephalosporins |
| US4600773A (en) * | 1983-12-01 | 1986-07-15 | Eli Lilly And Company | Crystalline cephalexin hydrochloride monohydrate |
| US4775751A (en) * | 1985-06-03 | 1988-10-04 | Eli Lilly & Company | Process for cephalexin hydrochloride alcoholates |
| US5908929A (en) * | 1996-12-05 | 1999-06-01 | Vitara Chemicals Limited | Process for the manufacture of the antibiotic 7-(D-α-amino-α-phenylacetamido)-3-methyl-3-cephem-4-carboxylic acid (cephalexin) and pharmaceutically acceptable salts thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3131184A (en) * | 1961-12-27 | 1964-04-28 | Smith Kline French Lab | Derivatives of 7-aminocephalosporanic acid |
| US3167550A (en) * | 1962-11-13 | 1965-01-26 | Smith Kline French Lab | Derivatives of 7-aminocephalosporanic acid |
| US3324118A (en) * | 1965-12-27 | 1967-06-06 | Lilly Co Eli | Phenalkylmercaptomethyl cephalosporins |
-
1966
- 1966-09-14 US US579222A patent/US3507861A/en not_active Expired - Lifetime
-
1967
- 1967-03-10 NO NO167231A patent/NO133804C/no unknown
- 1967-03-22 SE SE03992/67A patent/SE359841B/xx unknown
- 1967-03-23 FR FR99908A patent/FR6294M/fr not_active Expired
- 1967-03-23 NL NL676704294A patent/NL141515B/en not_active IP Right Cessation
- 1967-03-23 BE BE696026D patent/BE696026A/xx not_active IP Right Cessation
- 1967-03-27 ES ES338498A patent/ES338498A1/en not_active Expired
- 1967-03-28 CH CH428767A patent/CH501011A/en not_active IP Right Cessation
- 1967-03-28 DE DE1670625A patent/DE1670625C3/en not_active Expired
- 1967-03-28 DK DK160567AA patent/DK123104B/en not_active IP Right Cessation
-
1971
- 1971-03-27 JP JP46018322A patent/JPS4921155B1/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE1670625A1 (en) | 1970-08-06 |
| CH501011A (en) | 1970-12-31 |
| DE1670625C3 (en) | 1975-05-28 |
| DK123104B (en) | 1972-05-15 |
| DE1670625B2 (en) | 1974-10-24 |
| ES338498A1 (en) | 1968-04-01 |
| NL6704294A (en) | 1968-03-15 |
| BE696026A (en) | 1967-09-25 |
| JPS4921155B1 (en) | 1974-05-30 |
| US3507861A (en) | 1970-04-21 |
| NO133804C (en) | 1976-06-30 |
| NL141515B (en) | 1974-03-15 |
| FR6294M (en) | 1968-09-09 |
| SE359841B (en) | 1973-09-10 |
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